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NGJA
National Gem and Jewellery Authority
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NGJA
National Gem and Jewellery Authority
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Rathnadeepa
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Sri Lanka – The Blue Sapphire Capital
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Gem Testing Laboratory
Gem Testing Laboratory
Background of NGJA Gem Testing Laboratory
Basic gemological instruments available in NGJA Laboratory
Advanced gemological instruments available in NGJA Laboratory
Types of gem testing laboratory certificates issued by NGJA
Charges for gem testing laboratory certificates issued by NGJA
Contact gem laboratory centers of NGJA
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